Scissors and processing technology thereof

Abstract

The invention relates to the technical field of scissors and particularly discloses a pair of scissors and a processing technology thereof.The pair of scissors comprises two half scissor sets, hinge mechanisms are arranged in the middles of the outer sides of the half scissor sets, and the two half scissor sets are hinged to each other through the hinge mechanisms; each half shear set comprises a ring body, a mounting mechanism is arranged at the top of each ring body, a shear blade is mounted at the top of each ring body through the corresponding mounting mechanism, and the ring bodies are hinged to each other through a hinge mechanism; during use, the adjusting plate is pulled by pressing the friction plate, the connecting shaft and the push block are driven to enable the clamping block to move outwards, the limiting spring is extruded, at the moment, the shaft body can be inserted into the ring bodies to complete hinged installation of the two ring bodies, the friction plate is loosened after installation, the limiting spring resets to enable the clamping block to be clamped into the shaft body clamping groove, and the shaft body and the installation ring are rapidly limited and clamped. The mounting ring is rotatably connected with the ring body, so that the two half scissor groups are quickly mounted and dismounted, reverse operation is performed, the adjusting plate is pulled to separate the clamping block from the clamping groove and pull out the shaft body, and dismounting and overhauling of the scissors are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of scissors, in particular to a pair of scissors and a processing technology thereof. Background Art

[0002] Scissors are a tool with a long history and are extremely common. They are composed of crossed blades and handles. They play an indispensable role in a wide range of human life and production. The blades are usually made of hard and sharp metals such as stainless steel. The handles are used to drive the blades to open and close, and they can cut cloth, paper, flowers, as well as leather, plastic, metal sheets and other materials in industrial production.

[0003] However, the existing scissors have exposed many problems in practical applications. For example, the easily adjustable scissors with the announcement number "CN210389263U" have the advantages of adjustable pivot device and preventing the pivot from becoming loose due to collision, but there are still obvious defects. The scissors are hingedly installed. When rust or blade breakage occurs, it is extremely inconvenient to quickly remove the scissors and handles, making it difficult to achieve flexible disassembly, replacement and maintenance, which greatly affects the maintenance efficiency and user experience.

[0004] In addition, many current scissors use a black coating to cover the surface to enhance rust resistance and aesthetics. However, the scissors treated in this way are very easy to scratch, and once scratches appear on the pure black surface, they are extremely conspicuous, seriously affecting the appearance and giving users a bad impression. In view of these shortcomings in the structural design and surface treatment of existing scissors, there is an urgent need to improve their design to meet people's growing usage needs and enhance the practicality and durability of the scissors in various scenarios. Summary of the invention

[0005] The object of the present invention is to provide a pair of scissors and a processing technology thereof, so as to solve the problem in the above-mentioned background technology that the existing scissors are inconvenient to be flexibly disassembled and repaired during use.

[0006] To achieve the above object, the present invention provides a pair of scissors, comprising two half scissor groups, wherein a hinge mechanism is provided at the middle part of the outer side of each half scissor group, and the two half scissor groups are hingedly mounted to each other through the hinge mechanism;

[0007] The half scissors set comprises a ring body, a mounting mechanism is provided on the top of the ring body, a shearing blade is mounted on the top of the ring body through the mounting mechanism, the ring bodies are hinged to each other through a hinge mechanism, and an adjustable handle is fixedly mounted on the bottom of the ring body;

[0008] The hinge mechanism includes an axis body and a mounting ring, wherein the axis body is inserted into the inner side of the ring body, the mounting ring is rotatably connected to the outer side of the ring body and is arranged concentrically with the ring body, the top of the mounting ring is fixedly connected to a limiting assembly, and the inner side of the limiting assembly is clamped with the outer end of the axis body.

[0009] Furthermore, the limiting assembly includes a base frame and a slot, the base frame is fixedly installed on the top of the mounting ring, the slot is opened at both ends of the top of the shaft body, the inside of the base frame is fixedly connected with a telescopic spring, the bottom of the telescopic spring is fixedly installed with a push block, the bottom of the push block is fixedly installed with a slot, and the bottom of the slot passes through the mounting ring and is inserted into the inside of the slot.

[0010] Furthermore, a connecting shaft is fixedly connected to the top of the push block, and an adjusting plate is fixedly installed on the top of the connecting shaft through the base frame, and the adjusting plate is arranged in a concave shape.

[0011] Furthermore, a friction plate is fixedly connected to the outer side of the adjustment plate, and anti-slip striped grooves are arranged at equal intervals on the outer side of the friction plate.

[0012] Furthermore, the mounting mechanism includes a mounting groove, a positioning assembly and a mounting block, the mounting groove is opened at the top of the mounting ring, the mounting block is fixedly connected to the bottom of the shear, the mounting block is inserted into the inside of the mounting groove, the positioning assembly is fixedly installed on one side outside the ring body, and the positioning assembly and the shear are snap-connected.

[0013] Furthermore, the positioning assembly includes a guide rail and a limit frame, the guide rail is fixedly installed on one side outside the ring body, the inside of the guide rail is fixedly connected to a limit spring, the outer end of the limit spring is fixedly connected to a movable block, the top of the movable block is fixedly installed with a connecting shaft, the top of the connecting shaft is fixedly installed with a limit block, the limit frame is fixedly connected to the outer lower end of the shear piece, and the end of the limit block is inserted into the inner side of the limit frame.

[0014] Furthermore, a connecting rod is fixedly connected to the bottom of the movable block, and a push plate is fixedly installed on the bottom of the connecting rod passing through the guide rail, and the push plate is L-shaped.

[0015] Furthermore, the adjustable grip comprises a connecting plate, the connecting plate is fixedly mounted on the bottom of the ring body, an adjusting member is fixedly mounted on the outer end of the connecting plate, and the outer end of the adjusting member is fixedly connected to the handle ring.

[0016] Furthermore, the adjusting member includes a sleeve tube, which is fixedly installed on the bottom of the connecting plate, and a sliding rod is slidably connected inside the sleeve tube. The bottom of the sliding rod is fixedly connected to the top of the shank ring, and limiting holes are arranged linearly at equal intervals on the outside of the sliding rod. A hand screw is threadedly connected to the lower end of the outer side of the sleeve tube, and the end of the hand screw passes through the sleeve tube and is inserted into the inside of the limiting hole.

[0017] A scissors processing technology comprises the following steps:

[0018] Step 1: Preliminary processing of the shears: select the designated metal sheet and cut it according to the designed size with a shearing machine, with the size error controlled within ±0.5mm; punch out the prototype of the shear with a punching machine, and then grind it with a grinder to control the thickness of the shear within the designed value ±0.1mm, and the angle deviation of the cutting edge is controlled within ±2°;

[0019] Step 2: High temperature blackening treatment: put the preliminarily processed cut pieces into a high temperature blackening furnace, heat it to 140°C, and keep the temperature constant for 75 minutes;

[0020] Step 13: Select polishing medium, select alumina ceramic particles with a particle size of 2-3mm as polishing medium;

[0021] Step 4: Equipment preparation: if roller polishing is used, put the shears and polishing media into the drum polisher in a volume ratio of 1:3, and set the speed to 25 rpm; if vibration polishing is used, put the same ratio into the vibration polisher, set the vibration frequency to 120 times / minute and the amplitude to 5mm;

[0022] Step 5: Processing, start the drum polisher or vibration polisher and run it for 45 minutes;

[0023] Step 6: Quality inspection and sorting. Check the surface of the cut pieces with an optical microscope and measure the hardness with a hardness tester. Place the qualified cut pieces in an ultrasonic cleaner for 15 minutes, then place them in a dryer and dry them at 80°C for 10 minutes.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The cam is then released and the spring is released, and the movement of the spring forces the movable block to move inwards, thereby pushing the cam and the locking block together so that the cam can be easily moved out of the locking grooves at both ends of the cam.

[0026] Secondly, in the present invention, during use, the hand screw is twisted to rotate it outwards. When the end of the hand screw is separated from the limiting hole, the sliding rod in the sleeve tube can be pulled out, and the total length of the sleeve tube and the sliding rod can be flexibly adjusted, thereby realizing free adjustment of the length of the scissors grip. After the adjustment is completed, the hand screw is screwed back into the limiting hole to fix it, which significantly improves the convenience of use. The installation mechanism is also excellent. Pulling out the push plate can drive the connecting rod to make the movable block slide in the guide rail, and the limiting spring is adjusted to compress, so that the limiting block at the end of the connecting shaft is separated from the limiting frame, so that the shearing piece can be removed from the top of the ring body. During installation, the installation block of the shearing piece is inserted into the installation groove, the push plate is loosened, the limiting spring is reset, and the movable block is driven to make the limiting block insert into the limiting frame. Through the lateral limitation of the limiting block and the limiting frame, and the longitudinal limitation of the installation block and the installation groove, the shearing piece is stably connected, and it is easy to quickly disassemble and assemble, which provides convenience for the inspection and maintenance of the scissors.

[0027] Thirdly, in the present invention, after the processed scissors and the processed blades are assembled into complete scissors, on the one hand, the black coating of the blades becomes thinner after processing, so that the two blades are not easy to scratch each other when opening and closing, and at the same time, the coating presents a mottled effect, even if slight scratches occur, it is difficult to detect, on the other hand, around the rotating shaft of the scissors, due to the polishing effect, the edges of the blades become rounded and smooth, and during the opening and closing process of the blades, the other blade will not be scratched by the sharp edges, which greatly reduces the scratches of the blades around the rotating shaft. In addition, after blackening and the treatment of this scheme, except for some small hole positions and the intersection line of the blade surface of the last sharpening, the lines formed by the intersection of the various surfaces of the blades all show clear bright edges, and the metal background color is exposed, which effectively enhances the beauty and line sense of the blades, and the originally sharp edges on the back of the scissors are also processed to a smooth state, avoiding the risk of scratching fingers, and effectively ensuring the safety of consumers. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a side view structural schematic diagram of the present invention;

[0030] Figure 3 It is a schematic diagram of the side view structure of the present invention in a split state;

[0031] Figure 4 This is a schematic diagram of the top view structure of the present invention in a split state;

[0032] Figure 5 This is a schematic diagram of the structure of a half scissors set in the present invention;

[0033] Figure 6 For the present invention Figure 1 A schematic diagram of the enlarged structure at point A;

[0034] Figure 7 For the present invention Figure 1 A schematic diagram of the enlarged structure at B;

[0035] Figure 8 For the present invention Figure 5 Enlarged structural diagram at C.

[0036] In the figure: 1, half scissors assembly; 11, ring body; 12, mounting mechanism; 121, mounting groove; 122, positioning assembly; 1221, guide rail; 1222, limit frame; 1223, limit spring; 1224, movable block; 1225, connecting shaft; 1226, limit block; 1227, connecting rod; 1228, push plate; 123, mounting block; 13, shearing piece; 14, adjustable handle; 141, connecting plate ; 142, adjusting part; 1421, sleeve tube; 1422, slide rod; 1423, limit hole; 1424, thumb screw; 143, handle ring; 2, hinge mechanism; 21, shaft; 22, mounting ring; 23, limit assembly; 231, base frame; 232, slot; 233, telescopic spring; 234, push block; 235, block; 236, connecting shaft; 237, adjusting plate; 238, friction plate. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figure 1-Figure 8 In an embodiment of the present invention, a pair of scissors includes two half scissor groups 1, each half scissor group 1 is provided with a hinge mechanism 2 at the middle of the outer side, and the two half scissor groups 1 are hingedly mounted to each other through the hinge mechanism 2;

[0039] The half scissors set 1 comprises a ring body 11, a mounting mechanism 12 is provided on the top of the ring body 11, a shearing blade 13 is mounted on the top of the ring body 11 through the mounting mechanism 12, the ring bodies 11 are hinged to each other through a hinge mechanism 2, and an adjustable handle 14 is fixedly mounted on the bottom of the ring body 11;

[0040] The hinge mechanism 2 includes a shaft body 21 and a mounting ring 22. The shaft body 21 is inserted into the inner side of the ring body 11. The mounting ring 22 is rotatably connected to the outer side of the ring body 11 and is concentrically arranged with the ring body 11. The top of the mounting ring 22 is fixedly connected to the limit assembly 23. The inner side of the limit assembly 23 is clamped with the outer end of the shaft body 21. Through the hinge mechanism 2, during installation, the friction plate 238 is pressed to drive the adjustment plate 237 to move outward, and the adjustment plate 237 pulls the connecting shaft 236, so that the push block 234 pushes the clamping block 235 to move outward and squeeze the limit spring 1223. At this time, the shaft body 21 can be inserted into the ring body 11 to realize the hinge connection of the two ring bodies 11. After the installation is completed, the friction plate 238 is released, the limit spring 1223 is reset, and the movable block 1224 is pushed to make the clamping block 235 clamped into the clamping groove 232 of the shaft body 21. The shaft body 21 and the mounting ring 22 are quickly limited and clamped, and the mounting ring 22 and the ring body 11 are rotated. The movable connection can realize the quick installation of the two half scissors groups 1. When disassembling, the reverse operation is performed, and the adjustment plate 237 is pulled out to make the block 235 disengage from the slot 232 and pull out the shaft body 21. For the adjustable handle 14, the hand screw 1424 is twisted to make it rotate outward and disengage from the limiting hole 1423, and the sliding rod 1422 can be pulled out to adjust the total length of the sleeve tube 1421 and the sliding rod 1422, thereby adjusting the length of the handle. After adjustment, the screw is screwed back to fix it. As for the installation mechanism 12, the push plate 1228 is pulled out to drive the connecting rod 1227 to make the movable block 1224 slide on the guide rail 1221, and the limiting spring 1223 is compressed to make the limiting block 1226 disengage from the limiting frame 1222, so that the top shearing piece 13 of the ring body 11 can be removed. When installing, the reverse operation is performed, and the limiting block 1226 and the limiting frame 1222, the mounting block 123 and the mounting groove 121 are used to limit each other, so as to realize the stable connection and quick disassembly and assembly of the shearing piece 13.

[0041] See also Figure 1-Figure 7The limiting assembly 23 includes a base frame 231 and a card slot 232. The base frame 231 is fixedly installed on the top of the mounting ring 22. The card slot 232 is opened at the two ends of the top of the shaft body 21. The base frame 231 is fixedly connected with a telescopic spring 233. A push block 234 is fixedly installed at the bottom of the telescopic spring 233. A card block 235 is fixedly installed at the bottom of the push block 234. The bottom of the card block 235 passes through the mounting ring 22 and is inserted into the inside of the card slot 232. A connecting shaft 236 is fixedly connected to the top of the push block 234. The top of the connecting shaft 236 passes through the base frame 231 and is fixedly installed with an adjusting plate 237. The adjusting plate 237 is set in a concave shape. A friction plate 238 is fixedly connected to the outer side of the adjusting plate 237. The outer side of the friction plate 238 is evenly spaced with anti-slip striped grooves. When the shaft body 21 and the mounting ring 22 need to be installed, because the adjusting plate 237 is concave and the outer side is connected with stripes, The friction plate 238 with anti-slip striped grooves is convenient for applying force. Pressing the friction plate 238 drives the adjusting plate 237. The adjusting plate 237 pulls the push block 234 through the connecting shaft 236. The push block 234 compresses the telescopic spring 233 in the base frame 231 and drives the bottom clamping block 235 to move up and out of the clamping groove 232. At this time, the shaft body 21 can be placed in a suitable position on the top of the mounting ring 22, and the friction plate 238 is loosened. The telescopic spring 233 is reset, and the push block 234 and the clamping block 235 are pushed down. The bottom of the clamping block 235 passes through the mounting ring 22 and is accurately inserted into the clamping grooves 232 at both ends of the top of the shaft body 21, so as to realize a firm limited connection between the shaft body 21 and the mounting ring 22. When disassembly is required, the friction plate 238 is pressed again to drive the adjusting plate 237, and the above-mentioned stretching of the telescopic spring 233 is repeated to make the clamping block 235 out of the clamping groove 232, so that the shaft body 21 and the mounting ring 22 can be separated.

[0042] See also Figure 1-Figure 6The mounting mechanism 12 includes a mounting groove 121, a positioning assembly 122 and a mounting block 123. The mounting groove 121 is opened at the top of the mounting ring 22. The mounting block 123 is fixedly connected to the bottom of the shear 13. The mounting block 123 is inserted into the interior of the mounting groove 121. The positioning assembly 122 is fixedly installed on one side outside the ring body 11. The positioning assembly 122 and the shear 13 are snap-connected. The positioning assembly 122 includes a guide rail 1221 and a limit frame 1222. The guide rail 1221 is fixedly installed on one side outside the ring body 11. The interior of the guide rail 1221 is fixedly connected to the limit frame 1222. A limiting spring 1223 is provided, and the outer end of the limiting spring 1223 is fixedly connected to a movable block 1224, a connecting shaft 1225 is fixedly installed on the top of the movable block 1224, a limiting block 1226 is fixedly installed on the top of the connecting shaft 1225, a limiting frame 1222 is fixedly connected to the outer lower end of the shear piece 13, the end of the limiting block 1226 is inserted into the inner side of the limiting frame 1222, a connecting rod 1227 is fixedly connected to the bottom of the movable block 1224, and a push plate 1228 is fixedly installed on the bottom of the connecting rod 1227 through the guide rail 1221, and the shape of the push plate 1228 is as follows: The shape is L-shaped. First, align the mounting block 123 at the bottom of the shearing piece 13 with the mounting groove 121 at the top of the mounting ring 22 and insert it to preliminarily position the shearing piece 13. If the shearing piece 13 needs to be further fixed, the positioning component 122 plays a role. In the positioning component 122, the guide rail 1221 is fixed to the outer side of the ring body 11, and the limit spring 1223 in the guide rail 1221 connects the movable block 1224. When the shearing piece 13 needs to be fixed, the movable block 1224 is inserted into the outer side of the shearing piece 13 through the top connecting shaft 1225 under the action of the limit spring 1223. The shearing piece 13 and the ring body 11 are clamped and fixed in the limit frame 1222 at the lower end of the side. If the shearing piece 13 needs to be removed, the L-shaped push plate 1228 can be pushed. The push plate 1228 drives the movable block 1224 through the connecting rod 1227, so that the movable block 1224 stretches the limit spring 1223, and the limit block 1226 is pulled out of the limit frame 1222. At this time, the mounting block 123 can be pulled out from the mounting groove 121 to realize the removal of the shearing piece 13. In this way, the mounting mechanism 12 realizes the convenient installation and removal of the shearing piece 13 on the mounting ring 22.

[0043] See also Figure 1-Figure 6 and Figure 8The adjustable grip 14 includes a connecting plate 141, which is fixedly mounted on the bottom of the ring body 11, an adjusting member 142 is fixedly mounted on the outer end of the connecting plate 141, and a handle ring 143 is fixedly connected to the outer end of the adjusting member 142. The adjusting member 142 includes a sleeve tube 1421, which is fixedly mounted on the bottom of the connecting plate 141, and a slide rod 1422 is slidably connected to the inside of the sleeve tube 1421. The bottom of the slide rod 1422 and the handle ring 143 are connected. The top is fixedly connected, and the outer side of the slide rod 1422 is linearly arranged with equal spacing to form limit holes 1423. The outer lower end of the sleeve tube 1421 is threadedly connected with a hand screw 1424. The end of the hand screw 1424 passes through the sleeve tube 1421 and is inserted into the inner part of the limit hole 1423. When the length of the grip needs to be adjusted, the hand screw 1424 at the outer lower end of the sleeve tube 1421 is first operated, and the hand screw 1424 is rotated to withdraw it outward until it is adjusted. When the sliding rod 1422 is pulled out, the sliding rod 1422 will slide along the linear direction inside the sleeve tube 1421, thereby changing the length of the sliding rod 1422 extending out of the sleeve tube 1421, and then flexibly adjusting the total length of the adjusting member 142 composed of the sleeve tube 1421 and the sliding rod 1422, thereby adjusting the position of the knife handle ring 143, and thus achieving the purpose of adjusting the grip length. After adjusting to the appropriate length, the sliding screw 1424 is rotated in the opposite direction again so that its end re-penetrates the sleeve tube 1421 and is inserted into the corresponding limiting hole 1423, thereby fixing the relative position of the sliding rod 1422 and the sleeve tube 1421, and ensuring that the grip length remains stable during use.

[0044] A scissors processing technology comprises the following steps:

[0045] Step 1: Preliminary processing of the shear 13, select the specified metal plate, cut it according to the designed size with a shearing machine, and control the size error within ±0.5mm; punch out the prototype of the shear 13 with a punching machine, and then grind it with a grinder to control the thickness of the shear 13 within the designed value ±0.1mm, and the edge angle deviation is controlled within ±2°;

[0046] Step 2: high temperature blackening treatment, the preliminarily processed cut piece 13 is placed in a high temperature blackening furnace, the temperature is raised to 140° C., and the constant temperature is maintained for 75 minutes;

[0047] Step 13: Select polishing medium, select alumina ceramic particles with a particle size of 2-3mm as polishing medium;

[0048] Step 4: Equipment preparation: if roller polishing is used, put the shearing piece 13 and the polishing medium into a roller polisher in a volume ratio of 1:3, and set the speed to 25 rpm; if vibration polishing is used, put the same ratio into a vibration polisher, set the vibration frequency to 120 times / minute and the amplitude to 5mm;

[0049] Step 5: Treatment, start the drum polisher or vibration polisher, and run it for 45 minutes to make the black coating of the scissors 13 mottled and thinner. At the same time, treat the sharp edges of the scissors 13, except for the edges of the blade surface, which can prevent the coating from being scratched by the opposite scissors 13 to a certain extent, and prevent the back edge of the scissors from scratching the hands of the scissors holder. The intersection lines of the treated scissors 13 become bright edges, which complement the mottled feeling of the layer, effectively increasing the contour and beauty of the scissors 13;

[0050] Step 6: Quality inspection and sorting: check the surface of the cut pieces 13 with an optical microscope, measure the hardness with a hardness tester, put the qualified cut pieces 13 into an ultrasonic cleaner for 15 minutes, and then put them into a dryer and dry them at 80°C for 10 minutes.

[0051] The working principle of the present invention is as follows: in the present invention, by setting the hinge mechanism 2, when the device is in use, the shaft body 21 is inserted into the inner side of the ring body 11. During this process, the friction plate 238 is pressed to make the adjustment plate 237 move outward. The outward movement of the adjustment plate 237 will drive the connecting shaft 236 to pull the push block 234, thereby making the block 235 move outward, and at the same time, it will squeeze the limit spring 1223 to make it enter a compressed state. After the push block 234 drives the block 235 to move outward, the shaft body 21 can be smoothly inserted into the inner side of the ring body 11. After the shaft body 21 is inserted into the inner side of the ring body 11, the two ring bodies 11 can be hingedly installed. After the hinged installation operation is completed, the friction plate 238 is released. At this time, the limit spring 1223 is reset, driving the movable block 1224 to move inward. The inward movement of the movable block 1224 will push the connecting shaft The coupling 236 drives the block 235 at the end of the push block 234 to be inserted into the slots 232 at both ends of the shaft body 21. The block 235 and the slots 232 at both ends of the shaft body 21 are mutually limited, so that the shaft body 21 can be quickly and firmly installed on the inner side of the mounting ring 22. Since the mounting ring 22 and the ring body 11 are rotatably connected, the mounting ring 22 and the shaft body 21 form a stable structure while being able to flexibly rotate relative to the ring body 11. In this way, the installation of the two half scissor sets 1 can be quickly completed. When disassembly is required, it is only necessary to pull the adjustment plate 237 to drive the coupling 236 to pull the push block 234, so that the block 235 moves outward and disengages from the slot 232, and the shaft body 21 can be pulled out. It can be seen that the scissors as a whole can realize the rapid disassembly and assembly of the two half scissor sets 1, which is convenient for disassembly and maintenance operations.

[0052] The adjustable handle 14 is provided in the present invention. When the scissors are in use, the hand screw 1424 can be adjusted and twisted to make it rotate outward. When the end of the hand screw 1424 is out of the inner side of the limiting hole 1423, the sliding bar 1422 in the sleeve tube 1421 can be pulled out to make it slide. By pulling out the sliding bar 1422 to slide, the total length of the sleeve tube 1421 and the sliding bar 1422 can be flexibly adjusted. In this way, when the scissors are in use, the length of the scissors grip can be flexibly adjusted. After the length adjustment is completed, the hand screw 1424 is screwed back into the inner side of the limiting hole 1423 to achieve fixation, thereby further improving the convenience of use of the device. In addition, the design of the mounting mechanism 12 also plays an important role during use. Specifically, when in use, the push plate 1228 is adjusted to drive the connecting rod 1227 to push the movable block 1224 to slide on the inner side of the guide rail 1221. At the same time, the telescopic spring 233 is adjusted to be in a compressed state. When the shearing piece 13 needs to be installed, it only needs to insert the mounting block 123 on the shearing piece 13 into the mounting groove 121, and then release the push plate 1228. At this time, the telescopic spring 126 is retracted. The spring 233 is reset, driving the movable block 1224 to push the connecting shaft 1225, so that it drives the limit block 1226 to insert into the inner side of the limit frame 1222. The limit block 1226 and the limit frame 1222 are mutually limited, so that the shearing piece 13 can be firmly clamped. The limit block 1226 and the limit frame 1222 limit it laterally, and the mounting block 123 and the mounting groove 121 limit it longitudinally, thereby realizing a stable clamping installation. As a whole, the inspection and disassembly during use is more convenient.

Claims

1. A pair of scissors, characterized in that: It comprises two half-scissors sets (1), wherein a hinge mechanism (2) is provided at the middle part of the outer side of each half-scissors set (1), and the two half-scissors sets (1) are hingedly mounted to each other via the hinge mechanism (2); The half scissors set (1) comprises a ring body (11), a mounting mechanism (12) is provided on the top of the ring body (11), a shearing blade (13) is mounted on the top of the ring body (11) via the mounting mechanism (12), the ring bodies (11) are hinged to each other via a hinge mechanism (2), and an adjustable handle (14) is fixedly mounted on the bottom of the ring body (11); The hinge mechanism (2) comprises an axle body (21) and a mounting ring (22); the axle body (21) is inserted into the inner side of the ring body (11); the mounting ring (22) is rotatably connected to the outer side of the ring body (11) and is arranged concentrically with the ring body (11); the top of the mounting ring (22) is fixedly connected to a limit assembly (23); the inner side of the limit assembly (23) is clamped with the outer end of the axle body (21).

2. A pair of scissors according to claim 1, characterized in that: The limiting assembly (23) comprises a base frame (231) and a clamping slot (232); the base frame (231) is fixedly mounted on the top of the mounting ring (22); the clamping slot (232) is opened at two ends of the top of the shaft body (21); a telescopic spring (233) is fixedly connected inside the base frame (231); a push block (234) is fixedly mounted on the bottom of the telescopic spring (233); a clamping block (235) is fixedly mounted on the bottom of the push block (234); the bottom of the clamping block (235) passes through the mounting ring (22) and is inserted into the inside of the clamping slot (232).

3. A pair of scissors according to claim 2, characterized in that: The top of the push block (234) is fixedly connected with a connecting shaft (236), and the top of the connecting shaft (236) passes through the base frame (231) and is fixedly installed with an adjustment plate (237), and the adjustment plate (237) is arranged in a concave shape.

4. A pair of scissors according to claim 3, characterized in that: The outer side of the adjustment plate (237) is fixedly connected to a friction plate (238), and the outer side of the friction plate (238) is provided with anti-slip grooves at equal intervals.

5. The scissors according to claim 1, characterized in that: The mounting mechanism (12) comprises a mounting groove (121), a positioning assembly (122) and a mounting block (123); the mounting groove (121) is opened at the top of the mounting ring (22); the mounting block (123) is fixedly connected to the bottom of the shearing piece (13); the mounting block (123) is inserted into the interior of the mounting groove (121); the positioning assembly (122) is fixedly mounted on one side outside the ring body (11); and the positioning assembly (122) and the shearing piece (13) are snap-connected.

6. A pair of scissors according to claim 5, characterized in that: The positioning assembly (122) comprises a guide rail (1221) and a limit frame (1222); the guide rail (1221) is fixedly mounted on one side outside the ring body (11); a limit spring (1223) is fixedly connected inside the guide rail (1221); a movable block (1224) is fixedly connected to the outer end of the limit spring (1223); a connecting shaft (1225) is fixedly mounted on the top of the movable block (1224); a limit block (1226) is fixedly mounted on the top of the connecting shaft (1225); the limit frame (1222) is fixedly connected to the outer lower end of the shear (13); and an end of the limit block (1226) is inserted into the inner side of the limit frame (1222).

7. A pair of scissors according to claim 6, characterized in that: The bottom of the movable block (1224) is fixedly connected with a connecting rod (1227), and the bottom of the connecting rod (1227) passes through the guide rail (1221) and is fixedly installed with a push plate (1228), and the push plate (1228) is arranged in an L shape.

8. The scissors according to claim 1, characterized in that: The adjustable grip (14) comprises a connecting plate (141), wherein the connecting plate (141) is fixedly mounted on the bottom of the ring body (11), an adjusting member (142) is fixedly mounted on the outer end of the connecting plate (141), and the outer end of the adjusting member (142) is fixedly connected to a handle ring (143).

9. A pair of scissors according to claim 8, characterized in that: The adjusting member (142) comprises a sleeve tube (1421), wherein the sleeve tube (1421) is fixedly mounted on the bottom of the connecting plate (141), a sliding rod (1422) is slidably connected inside the sleeve tube (1421), the bottom of the sliding rod (1422) is fixedly connected to the top of the handle ring (143), and limiting holes (1423) are arranged linearly at equal intervals on the outer side of the sliding rod (1422), and a hand screw (1424) is threadedly connected at the lower end of the outer side of the sleeve tube (1421), and the end of the hand screw (1424) passes through the sleeve tube (1421) and is inserted into the inner side of the limiting hole (1423).

10. A scissors processing technology, characterized in that: A pair of scissors according to any one of claims 1 to 9, characterized in that it comprises the following steps: Step 1: Preliminary processing of the shear (13), selecting a designated metal sheet, cutting it according to the designed size with a shearing machine, and controlling the size error within ±0.5mm; punching out the prototype of the shear (13) with a punching machine, and then grinding it with a grinder, controlling the thickness of the shear (13) within the designed value ±0.1mm, and controlling the edge angle deviation within ±2°; Step 2: high temperature blackening treatment, the preliminarily processed cut pieces (13) are placed in a high temperature blackening furnace, heated to 140°C, and kept at a constant temperature for 75 minutes; Step 13: Select polishing medium, select alumina ceramic particles with a particle size of 2-3mm as polishing medium; Step 4: Equipment preparation: if roller polishing is used, put the shears (13) and polishing medium in a roller polishing machine at a volume ratio of 1:3, and set the speed to 25 rpm; if vibration polishing is used, put the same ratio in a vibration polishing machine, set the vibration frequency to 120 times / min, and the amplitude to 5 mm; Step 5: Processing, start the drum polisher or vibration polisher and run it for 45 minutes; Step 6: Quality inspection and sorting: Use an optical microscope to check the surface of the cut pieces (13), use a hardness tester to measure the hardness, put the qualified cut pieces (13) into an ultrasonic cleaner for 15 minutes, and then put them into a dryer and dry them at 80° C. for 10 minutes.

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